diff options
Diffstat (limited to 'ui/cursor.c')
| -rw-r--r-- | ui/cursor.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/ui/cursor.c b/ui/cursor.c new file mode 100644 index 0000000000..2b8dd3fa50 --- /dev/null +++ b/ui/cursor.c @@ -0,0 +1,211 @@ +#include "qemu-common.h" +#include "ui/console.h" + +#include "cursor_hidden.xpm" +#include "cursor_left_ptr.xpm" + +/* for creating built-in cursors */ +static QEMUCursor *cursor_parse_xpm(const char *xpm[]) +{ + QEMUCursor *c; + uint32_t ctab[128]; + unsigned int width, height, colors, chars; + unsigned int line = 0, i, r, g, b, x, y, pixel; + char name[16]; + uint8_t idx; + + /* parse header line: width, height, #colors, #chars */ + if (sscanf(xpm[line], "%u %u %u %u", + &width, &height, &colors, &chars) != 4) { + fprintf(stderr, "%s: header parse error: \"%s\"\n", + __FUNCTION__, xpm[line]); + return NULL; + } + if (chars != 1) { + fprintf(stderr, "%s: chars != 1 not supported\n", __FUNCTION__); + return NULL; + } + line++; + + /* parse color table */ + for (i = 0; i < colors; i++, line++) { + if (sscanf(xpm[line], "%c c %15s", &idx, name) == 2) { + if (sscanf(name, "#%02x%02x%02x", &r, &g, &b) == 3) { + ctab[idx] = (0xff << 24) | (b << 16) | (g << 8) | r; + continue; + } + if (strcmp(name, "None") == 0) { + ctab[idx] = 0x00000000; + continue; + } + } + fprintf(stderr, "%s: color parse error: \"%s\"\n", + __FUNCTION__, xpm[line]); + return NULL; + } + + /* parse pixel data */ + c = cursor_alloc(width, height); + for (pixel = 0, y = 0; y < height; y++, line++) { + for (x = 0; x < height; x++, pixel++) { + idx = xpm[line][x]; + c->data[pixel] = ctab[idx]; + } + } + return c; +} + +/* nice for debugging */ +void cursor_print_ascii_art(QEMUCursor *c, const char *prefix) +{ + uint32_t *data = c->data; + int x,y; + + for (y = 0; y < c->height; y++) { + fprintf(stderr, "%s: %2d: |", prefix, y); + for (x = 0; x < c->width; x++, data++) { + if ((*data & 0xff000000) != 0xff000000) { + fprintf(stderr, " "); /* transparent */ + } else if ((*data & 0x00ffffff) == 0x00ffffff) { + fprintf(stderr, "."); /* white */ + } else if ((*data & 0x00ffffff) == 0x00000000) { + fprintf(stderr, "X"); /* black */ + } else { + fprintf(stderr, "o"); /* other */ + } + } + fprintf(stderr, "|\n"); + } +} + +QEMUCursor *cursor_builtin_hidden(void) +{ + QEMUCursor *c; + + c = cursor_parse_xpm(cursor_hidden_xpm); + return c; +} + +QEMUCursor *cursor_builtin_left_ptr(void) +{ + QEMUCursor *c; + + c = cursor_parse_xpm(cursor_left_ptr_xpm); + return c; +} + +QEMUCursor *cursor_alloc(int width, int height) +{ + QEMUCursor *c; + int datasize = width * height * sizeof(uint32_t); + + c = g_malloc0(sizeof(QEMUCursor) + datasize); + c->width = width; + c->height = height; + c->refcount = 1; + return c; +} + +void cursor_get(QEMUCursor *c) +{ + c->refcount++; +} + +void cursor_put(QEMUCursor *c) +{ + if (c == NULL) + return; + c->refcount--; + if (c->refcount) + return; + g_free(c); +} + +int cursor_get_mono_bpl(QEMUCursor *c) +{ + return (c->width + 7) / 8; +} + +void cursor_set_mono(QEMUCursor *c, + uint32_t foreground, uint32_t background, uint8_t *image, + int transparent, uint8_t *mask) +{ + uint32_t *data = c->data; + uint8_t bit; + int x,y,bpl; + + bpl = cursor_get_mono_bpl(c); + for (y = 0; y < c->height; y++) { + bit = 0x80; + for (x = 0; x < c->width; x++, data++) { + if (transparent && mask[x/8] & bit) { + *data = 0x00000000; + } else if (!transparent && !(mask[x/8] & bit)) { + *data = 0x00000000; + } else if (image[x/8] & bit) { + *data = 0xff000000 | foreground; + } else { + *data = 0xff000000 | background; + } + bit >>= 1; + if (bit == 0) { + bit = 0x80; + } + } + mask += bpl; + image += bpl; + } +} + +void cursor_get_mono_image(QEMUCursor *c, int foreground, uint8_t *image) +{ + uint32_t *data = c->data; + uint8_t bit; + int x,y,bpl; + + bpl = cursor_get_mono_bpl(c); + memset(image, 0, bpl * c->height); + for (y = 0; y < c->height; y++) { + bit = 0x80; + for (x = 0; x < c->width; x++, data++) { + if (((*data & 0xff000000) == 0xff000000) && + ((*data & 0x00ffffff) == foreground)) { + image[x/8] |= bit; + } + bit >>= 1; + if (bit == 0) { + bit = 0x80; + } + } + image += bpl; + } +} + +void cursor_get_mono_mask(QEMUCursor *c, int transparent, uint8_t *mask) +{ + uint32_t *data = c->data; + uint8_t bit; + int x,y,bpl; + + bpl = cursor_get_mono_bpl(c); + memset(mask, 0, bpl * c->height); + for (y = 0; y < c->height; y++) { + bit = 0x80; + for (x = 0; x < c->width; x++, data++) { + if ((*data & 0xff000000) != 0xff000000) { + if (transparent != 0) { + mask[x/8] |= bit; + } + } else { + if (transparent == 0) { + mask[x/8] |= bit; + } + } + bit >>= 1; + if (bit == 0) { + bit = 0x80; + } + } + mask += bpl; + } +} |